问题补充:
Don’t forget when you leave the classroom.
A. to take away it
B. to take it away
C. taking away it
D. took away it
答案:
A. to take away it
(答案→)B. to take it away
C. taking away it
D. took away it
解析:forget to do sth 表示事情未做,同时,take … away后接的宾语为代词,故选B